Keyboard



FIG. 1 is a bottom, right side perspective view of the keyboard;

FIG. 2 is an enlarged right side view thereof, and a mirror image of the left side view;

FIG. 3 is a top end view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom end view thereof; and,

FIG. 7 is a top perspective view thereof. 

CLAIM The ornamental design for a keyboard, as shown and described. 